/*
 *    sora-editor - the awesome code editor for Android
 *    https://github.com/Rosemoe/sora-editor
 *    Copyright (C) 2020-2023  Rosemoe
 *
 *     This library is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU Lesser General Public
 *     License as published by the Free Software Foundation; either
 *     version 2.1 of the License, or (at your option) any later version.
 *
 *     This library is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *     Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public
 *     License along with this library; if not, write to the Free Software
 *     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 *     USA
 *
 *     Please contact Rosemoe by email 2073412493@qq.com if you need
 *     additional information or have any questions
 */
package io.github.rosemoe.sora.lsp.client.connection;

import android.util.Pair;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * A customizable connection provider, where callers provide the input and output streams.
 */
public class CustomConnectProvider implements StreamConnectionProvider {

    private final StreamProvider streamProvider;
    private InputStream inputStream;
    private OutputStream outputStream;

    public CustomConnectProvider(StreamProvider streamProvider) {
        this.streamProvider = streamProvider;
    }


    @Override
    public void start() throws IOException {
        Pair<InputStream, OutputStream> streams = streamProvider.getStreams();
        inputStream = streams.first;
        outputStream = streams.second;
    }

    @Override
    public InputStream getInputStream() {
        return inputStream;
    }

    @Override
    public OutputStream getOutputStream() {
        return outputStream;
    }

    @Override
    public void close() {
        try {
            inputStream.close();
            outputStream.close();
        } catch (IOException e) {
            // ignore
        }

    }

    /**
     * Provider of language server connection
     */
    public interface StreamProvider {
        /**
         * Returns the connection stream for the language server client, usually an output stream and an input stream
         */
        Pair<InputStream, OutputStream> getStreams() throws IOException;
    }


}
